Cyclists in north London and Hertfordshire have been targeted by violent gangs on motorbikes and had their bikes stolen. A number of attacks have taken place, including one incident caught on dashcam in which members of the group can be seen wielding an axe. Hertfordshire Police said cyclists who think they are being followed, particularly in a remote area, should call 999. A force spokesperson said: "We'd rather attend to find that everything is in order, than miss an opportunity to catch a pot